Niacin, also called Vitamin B-3, is part of a coenzyme needed for energy metabolism.* Niacin helps maintain healthy functions of the nervous system and skin, while promoting the health of your cardiovascular system.* Flush free means that you don’t experience the familiar “flush” when using this supplement.* Niacin is a water-soluble B vitamin. The B Vitamin Complex is made up of several essential nutrients that provide nourishment for the stress of daily living